#60 Add some missing settings to update client action

[aberg09]

Support for the following settings has been added:

• frontchannelLogout
• alwaysDisplayInConsole
• consentRequired
• notbefore
• nodeReRegistrationTimeout
• surrogateAuthRequired

Tests and docs included.

[klg71]

Looks good :) Thanks for you contribution 🥇 I will merge and release it :)